to put 2 Tetra 50w Submersible heaters (one on either side of a tank) in a ~ 1.5 or so gallon Kritter keeper? I don't know why but the temperature is always at 74-75 and Lyre seems really lethargic, it also feels colder than the h2o of my other tanks.

Just wanted to check first. ASAP answers would be REALLY appreciated because he is already not well and I am trying my best to save him.

Thanks sooooo x infinity much guys!!!!!

if not I might try a heat producing type light bulb over him to see if that helps the temp. without it fluctuating too much.

Thanks for the reply, but I meant two if it wasn't holding the heat in. Actually I am not going to use my KK anymore cus it holds a gallon less water than my 2.5's and got another 2.5 instead. so we'll see how the heat from the tetra50w holds in a glass tank.

I don't think it would work. I have the heater and I have the same problem only at night but I think it's better than the other heater I had that I had to plug and unplug and sometimes the water was over 82 degrees.
Anyway, I don't think it will work bc the the Tetra has a thermostat that shuts off when the heater so even if you had 2 heaters, I think, they would do the same as one.